Appendices
A-28
NJ-series Instructions Reference Manual (W502)
Name No User Errors to Clear Error code 16#040B
Meaning An instruction to clear user-defined errors was executed when there was no user-defined error.
Effects User program Continues. Operation The relevant instruction will end according to specifica-
tions. The output or Unit operation is not affected.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
An instruction to clear user-defined
errors was executed when there was
no user-defined error.
Correct the program so that the
instruction is executed when there is
a user-defined error.
Write the program so that the instruc-
tion is executed when there is a user-
defined error.
Precautions/
Remarks
None
Name Limit Exceeded for User-defined Errors Error code 16#040C
Meaning An attempt was made to use the Create User-defined Error instruction to create more than the maximum number of
user-defined errors.
Effects User program Continues. Operation The relevant instruction will end according to specifica-
tions. The output or Unit operation is not affected.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
An attempt was made to use the Cre-
ate User-defined Error instruction to
create more than the maximum num-
ber of user-defined errors.
Execute the Reset User-defined Error
instruction. Monitor the number of
user-defined errors in the system-
defined variable to check the number
of user-defined errors.
Write the program so that it checks
the number of user-defined errors as
a condition to execute the user-
defined error instruction.
Precautions/
Remarks
None
Name Illegal Unit Specified Error code 16#040D
Meaning The Unit specified for an instruction does not exist.
Effects User program Continues. Operation The relevant instruction will end according to specifica-
tions. The output or Unit operation is not affected.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
A Unit that does not exist in the Unit
configuration information was speci-
fied.
Correct the unit number in the instruc-
tion so that it specifies a Unit in the
Unit configuration and make sure that
the actual Unit exists.
Make sure that unit numbers in
instructions specify Units in the Unit
configuration and make sure that the
actual Units exist.
A Unit that is in the Unit configuration
information was specified, but the
Units does not actually exist in the
Controller.
Precautions/
Remarks
None
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